diff options
| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2024-04-05 13:12:35 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-04-05 13:12:35 -0700 |
| commit | c7830236d58e9e982f3e180f054cfbc14788beca (patch) | |
| tree | 0b862053c7489f35450e8d1682c966e46f8221af | |
| parent | Merge tag 'riscv-for-linus-6.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux (diff) | |
| parent | arm64/ptrace: Use saved floating point state type to determine SVE layout (diff) | |
| download | wireguard-linux-c7830236d58e9e982f3e180f054cfbc14788beca.tar.xz wireguard-linux-c7830236d58e9e982f3e180f054cfbc14788beca.zip | |
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fix from Catalin Marinas:
"arm64/ptrace fix to use the correct SVE layout based on the saved
floating point state rather than the TIF_SVE flag. The latter may be
left on during syscalls even if the SVE state is discarded"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64/ptrace: Use saved floating point state type to determine SVE layout
| -rw-r--r-- | arch/arm64/kernel/ptrace.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c index 162b030ab9da..0d022599eb61 100644 --- a/arch/arm64/kernel/ptrace.c +++ b/arch/arm64/kernel/ptrace.c @@ -761,7 +761,6 @@ static void sve_init_header_from_task(struct user_sve_header *header, { unsigned int vq; bool active; - bool fpsimd_only; enum vec_type task_type; memset(header, 0, sizeof(*header)); @@ -777,12 +776,10 @@ static void sve_init_header_from_task(struct user_sve_header *header, case ARM64_VEC_SVE: if (test_tsk_thread_flag(target, TIF_SVE_VL_INHERIT)) header->flags |= SVE_PT_VL_INHERIT; - fpsimd_only = !test_tsk_thread_flag(target, TIF_SVE); break; case ARM64_VEC_SME: if (test_tsk_thread_flag(target, TIF_SME_VL_INHERIT)) header->flags |= SVE_PT_VL_INHERIT; - fpsimd_only = false; break; default: WARN_ON_ONCE(1); @@ -790,7 +787,7 @@ static void sve_init_header_from_task(struct user_sve_header *header, } if (active) { - if (fpsimd_only) { + if (target->thread.fp_type == FP_STATE_FPSIMD) { header->flags |= SVE_PT_REGS_FPSIMD; } else { header->flags |= SVE_PT_REGS_SVE; |